iPhone 17 Pro Max reaches 8h40min of autonomy in the candidate version of iOS 26.1

iPhone 17 Pro and Pro Max recorded significant autonomy gains in the Release Candidate version of iOS 26.1. Standardized tests indicate that the Pro Max model lasted 8 hours and 40 minutes, an increase of 34 minutes compared to iOS 26. The update fixes initial battery problems on flagships launched with iOS 26.

The iPhone 17 Pro showed an improvement of 38 minutes, reaching 7 hours and 47 minutes. Older models like the iPhone SE (2022) gained 13 minutes, while others saw reductions. The analysis used identical conditions, including maximum brightness and mobile connection.

• iPhone 17 Pro Max: 8h40min (+34min)
• iPhone 17 Pro: 7h47min (+38min)
• iPhone SE (2022): 3h47min (+13min)

Earnings on recent flagships

iPhone 17 Pro Max surpassed the performance of the iPhone 16 Pro Max on iOS 18, which lasted 8 hours and 28 minutes. The eSIM-only version contributed to the slightly larger battery in the new models.

The 34-minute gain on Pro Max reflects specific optimizations for processors and power management in iOS 26.1.

Reductions in intermediate models

iPhone Air lost 30 minutes of autonomy, ending the test in 5 hours and 59 minutes. The change could encourage the use of accessories like MagSafe Battery.

iPhone 16e lasted 7 hours and 13 minutes, a 35-minute drop compared to iOS 26. Repeated testing confirmed the consistent results.

iPhone 17 base recorded 6 hours and 44 minutes, with a reduction of just 7 minutes.

Performance of older devices

iPhone SE (2022) reached 3 hours and 47 minutes on iOS 26.1 RC. The time approaches the all-time maximum of 3 hours and 53 minutes on iOS 18.6.

Comparisons show improvement over the initial iOS 26, which lasted 3 hours and 34 minutes.

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Impact on previous Pro Max

iPhone 16 Pro Max maintained 7 hours and 20 minutes, a loss of 9 minutes compared to iOS 26. The model is still inferior to the new iPhone 17 Pro Max.

iPhone 16 Pro lasted 5 hours and 40 minutes, with an 18-minute decline.

Standardized Test Settings

All devices were reset and used the same clean account. The screen was at maximum brightness without auto-adjustment or True Tone.

Connection occurred via mobile data with a single operator. Scripts automated interactions like scrolling through videos and accessing notifications.